/Engine/Source/Runtime/Slate/Public/Framework/Text/ShapedTextCache.h
Try and find an existing shaped text instance
The shaped text instance, or null if it wasn't found or was stale
FShapedGlyphSequencePtr FindShapedText ( const [FCachedShapedTextKey](API\Runtime\Slate\Framework\Text\FCachedShapedTextKey) & InKey ) const